======================== unified (from filesystem) ========================
                                         'bitrate'  '123.779'
                                        'duration'  '153'
                                          'artist'  'Anita Traversi'
                                     'text_people'  ''
                                         'release'  'Dimitri 60s 70s'
                                           'title'  'Es ist so schön, verliebt zu sein'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-SYN-2', 'Q-BUSY-2', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['eurovision', '60s', 'italian', 'gothic metal', 'switzerland']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'rock-unsorted'
                                             'bpm'  '130.4'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     'Dimitri 60s 70s'
'TBPM' (BPM (beats per minute))                     '130.4'
'TCON' (Content type, a.k.a. Genre)                 'rock-unsorted'
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'Es ist so schön, verliebt zu sein'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Anita Traversi'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['eurovision', '60s', 'italian', 'gothic metal', 'switzerland']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.47 dB'
'TXXX:replaygain_track_peak'                        '0.459119'
'TXXX:youtube'                                      'zMy9vcLDhGs'

========================== row from database ==========================
                                              'id'  1477367
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/60s70s/Anita Traversi - Es ist so schön, verliebt zu sein (1965)-zMy9vcLDhGs.mp3
                                         'working'  None
                                         'bitrate'  123
                                    'duration_sec'  153
                                           'genre'  rock-unsorted
                                        'filesize'  2372392
                                           'mtime'  1621695818
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 60s70s (1965) zMy9vcLDhGs rock unsorted
                                      'tag_artist'  Anita Traversi
                                     'tag_release'  Dimitri 60s 70s
                                       'tag_title'  Es ist so schön, verliebt zu sein
                                             'bpm'  130.4
                                    'search_title'  'es':1 'ist':2 'schon':4,5,6,7 'sein':10 'so':3 'verliebt':8 'zu':9
                                   'search_artist'  'anita':1 'traversi':2
                                  'search_release'  '60s':2 '70s':3 'dimitri':1
                                     'search_rest'  '1965':2,3 '60s70s':1 'gs':10 'ldh':9 'my9vc':8 'rock':5 'unsorted':6 'z':7 'zmy9vcldhgs':4
                                    'search_combo'  '1965':17,18 '60s':14C '60s70s':16 '70s':15C 'anita':11B 'dimitri':13C 'es':1A 'gs':25 'ist':2A 'ldh':24 'my9vc':23 'rock':20 'schon':4A,5A,6A,7A 'sein':10A 'so':3A 'traversi':12B 'unsorted':21 'verliebt':8A 'z':22 'zmy9vcldhgs':19 'zu':9A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-1', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-2', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['eurovision', '60s', 'italian', 'gothic metal', 'switzerland']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621695817.975755  (2021-05-22 17:03:37)
                             'size'  2372392